Science 9 Quizbee

What is agency in the government is responsible for monitoring any volcanic and seismic activity on the Philippines?

• PAG-ASA

• PHIVOLCS

• DEDED

• DENR

What are the 3 parts of the volcano?

• Active, Inactive, Potentially Active

• Strombolian, Plinian, Vulcanian

• Summit, Base,Slope

• Magma, Lava, Conduit

It is the mouth of the volcano which is a funnel-shaped or bowl shaped hollow at the top of the vent.

• Crater

• Main Vent

• Conduit

• Magma Chamber

It is a molten rock which is given off onto the surface of the earth when a volcano erupts.

• Magma

• Ash Fall

• Pyroclastic

• Lava

How do you identify an active volcano?

• If it has erupted at least once for the past 10,000 years

• If it has not erupted ever since in the past 10,000 years and is not expected to erupt in the future.

• It has no history of eruption but it might erupt in the future.

• All of the above

Which of the following is the most abundant classficiation of the volcano according to its structure?

• Composite Volcano

• Shield Volcano

• Cinder Cone Volcano

• Phreatic Volcano

This type of volcanic eruption is periodic, weak to violent eruption characterized by fountain lava.

• Phreatic

• Phreatomagmatic

• Strombolian

• Vulcanian

This type of eruption is excessively explosive like in Pinatubo Volcano in Zambales

• Plinian

• Vulcanian

• Strombolian

• Phreatic

Which of these is NOT a sign of a forthcoming volcanic eruption?

• Crater glow

• volcanic tremors

• drying up of vegetation

• increased amount of hairfall

What is the basis of classifying volcanoes as active or inactive?

• size of the base

• shape of the cone

• age of the volcano

• records of eruption